What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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BMW F20 F30 F31 116d 316d 116HP N47N Engine ECU Control Unit DDE 8576341 Manual

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1635400841

Mercedes W163 Battery Ground Earth Strap Cable Wiring A1635400841

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8U0971067

Audi Q3 8U Radiator Fan Adapter Cable Harness Loom Wiring 8U0971067

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1668200075

Mercedes W205 Aerial Antenna Control Unit Keyless Go Entry A1668200075

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1728202989

Mercedes SLK R172 Roadster Antenna Amplifier Control Module A1728202989

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6855990

BMW X3 F25 ICM Control Unit Air Bag Module SRS Safety ECU 6855990

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6867170

Air Module BMW F20 F21 F30 F31 F32 F36 ECU ICM Plus SRS Control Unit 6867170

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 1167294

Mini Cooper One R50 R52 Fresh Air Recirculating Actuator 1167294 6NN007626

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0005404750

Mercedes-Benz S CL Class W220 C215 Fuse Box Battery Connector A0005404750

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7110854

BMW Z4 Series E85 Roadster Head Lamp Cleaning Device Container 7110854

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7481616

Tailgate Lift Module BMW F31 F36 Mini F60 Trunk Control Unit Rear ECU 7481616

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4E0955559E

Audi A3 8P A4 B7 A6 C6 Front Windscreen Rain Light Solar Sensor Unit 4E0955559B

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7561684-3

BMW E60 E90 330i 530i N52 258HP Engine ECU Kit DME 7561684 CAS2 Key Automatic

£284.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8617551-3

BMW F30 F31 320i Petrol N20 184HP Engine ECU Kit DME 8617551 FEM Key Manual

£284.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2389053301

Tailgate Trunk Mercedes X117 X156 W205 Boot Rear Control Module Unit A2389053301

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4G8959795J

Audi A7 4G8 Rear Door Module Control Module Unit Left Right N/O/S 4G8959795J

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0008005648

Mercedes W204 Front Seat Dynamic Lumbar Air Pump Unit A0008005648

£180.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7545042

BMW 1 3 Series E87 E90 E91 N46 118i 318i 120i 320i ECU DME Control Unit 7545042

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9343259-1

BMW X3 F25 B+ Distribution Box Battery Power Red Rear Control Unit 9206140

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2049017901-1

Rain Sensor Mercedes SLK R172 W204 Front Windscreen Control Unit A2049017901

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7791352

BMW X5 Series E53 3.0d M57N Cable Starter Base B 7791352 12427791352

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2711535391-2

Mercedes R171 SLK 200K 184HP M271.944 Engine ECU Kit A2711535391 Key Lock

£237.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. A2038202185

Mercedes W203 Door Control Module Rear Left N/S A2038202185

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9223682

BMW X5 X6 Series E70 E71 Dashboard Onboard Monitor Display Screen 8,8" 9223682

£113.95

Free delivery: Aug 27

If paid before 14:00

Part no. A9060034099

Mercedes-Benz Sprinter W906 Front Right O/S Door Wiring Loom Harness A9060005999

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7811700-3

BMW E60 LCI E87 E90 120d 320d 520d N47 177HP ECU KIT DDE 7811700 CAS3 Key Manual

£94.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. A1718200386

Mercedes SLK R171 Stereo Radio CD Player Head Unit A1718200386

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9239155

BMW F01 F10 CIC Professional Sat Nav Infotainment Radio Head Unit 9239155

£184.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9363680

PDC Module BMW X3 F25 X5 F15 Mini F55 Parking Assistant Control Unit 9363680

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2469002617

Mercedes W117 W242 W246 Head Unit Audio Player Radio Sat Nav Module A2469002617

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2469003114

Transmission Module Mercedes W176 W246 Control Unit ECU A2469003114

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9194064

Board Monitor BMW X5 X6 E70 E71 Sat Nav System Screen 8,8" 9194064

£85.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9187317

BMW X5 E61 E65 E70 E90 Telematics ECU Control Unit GSM 9187317

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q0962131

Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7618677

Battery Lead Cable BMW E81 E84 E87 RR1 RR2 RR3 Negative IBS 7618677

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9291451

BMW F13 Central Gateway Module ECU Control Unit Lear ZGW-02 High 9291451

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5L0035200

Skoda Yeti 5L Radio Stereo Head Unit Navigation Display Screen STD2 5L0035200

£427.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6461509777-1

Mercedes W203 220CDI OM646.963 150HP Engine Unit ECU Kit A6461509777 Key Lock

£113.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1779061002-1

Mercedes W177 Fuse Box Power Distribution Junction Relay Unit A1779061002

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8387568

BMW 7 Series E65 E66 Battery B Engine Compartment Terminal Point 8387568

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8573257

BMW F20 F30 F32 120d 320d 420d N47N 184HP Engine Module ECU DDE 8573257 Manual

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7551559

BMW E60 E61 E63 E64 Ground Cable Alternator Petrol 7551559

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7464634

BMW X1 F48 Control Unit Remote Backrest Unlocking 7464634

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 02E911022H

Audi S3 8Y 2.0 TFSI Starter Motor Engine Petrol 02E911022H

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2229009910

Mercedes W205 W213 C238 Seat Heating Heater Module Control Unit ECU A2229009910

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5WA959354

VW Volkswagen Golf Mk8 Air Module Control Unit Crash Impact Sensor 5WA959354

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4N0955557A

Audi A6 C8 A7 C8 Door Crash Impact Sensor Front Left N/S Side 4N0955557A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9282285

BMW X3 F25 Central Gateway Module Control Unit ECU 9282285

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8636070

BMW 3 F30 LCI 330e B48X Engine Gearbox Module Wiring Cable Loom Harness 8636070

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1729002113

Mercedes SLK R172 Radio Comand CD Navi Player Control Head Unit A1729002113

£165.95

Free delivery: Aug 27

If paid before 14:00

Part no. RHD-8T2035186Q

Audi S3 8V Multimedia MMI Radio Stereo Audio Head Unit CD Player 8T2035186Q

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7799854-2

BMW 1 3 Series E87 E90 118d 318d M47N2 122HP ECU KIT DDE 7799854 CAS2 + 2 Keys

£237.95

Free delivery: Aug 27

If paid before 14:00

Part no. BJ32-18K891-AA

Range Rover Evoque L538 Aerial Antenna Amplifier Module Unit BJ32-18K891-AA

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9286953

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9286953

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9337200

BMW 4 Series F32 F32N LCI Cable Loom Door Driver's Side Wiring Harness 9337200

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6823593

BMW F13 Front Lamp Headlight Footwell Control Module FRM III 3 Unit ECU 6823593

£42.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8K0907063AH

Audi A4 B8 Body Control Comfort Unit Module BCM ECU 8K0907063AH

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1569007402

Mercedes W176 W246 Body Control Module Unit Fuse Box BCM ECU A1569007402

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 1389749080

Pegueot Boxer III Rear PDC Parking Sensor Wiring Harness 1389749080

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4F0959655B

Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2129000217

Mercedes W212 Radio Head Unit Navi CD Player Control Unit A2129000217

£184.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8P0035186AB

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186AB

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5A08530

Fuel Pump Control BMW G30 G12 Mini F60 Tank Function Module Unit ECU 5A08530

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2218707385

Mercedes W221 Rear DVD Entertainment System Video Player Unit A2218707385

£303.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 7620985-6

Mini Cooper S R56 LCI R60 N18 1.6 184HP Engine Unit ECU Kit DME 7620985 Manual

£474.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 8510221-3

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6931987

BMW 7 Series E65 E66 E67 Control Unit Voice Input System Module 6931987

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8590102

Alternator Cable BMW 5 G30 G31 G12 B57 Battery Wiring Alternator B+ 8590102

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1729058300

Mercedes SLK R172 Pedestrian Protection Impact Crash Sensor Module A1729058300

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-9314848

Mini Cooper F56 Cable Set EPS Power Steering Wiring Harness 9314848

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2215402250

Mercedes W221 SAM Relay Fuse Box Module Control Unit ECU A2215402250

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. CV61-12A650-ANH

Ford Focus Mk3 1.0 GTDi M2DA 100HP Engine ECU Kit CV61-12A650-ANH BCM + 2 Keys

£208.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6C0915181B

Audi A1 8X Negative Battery Terminal Earth Cable Lead 6C0915181B

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1765406109

Wiring Harness Mercedes W176 A45 AMG Petrol M133 Low Temperature Pump Adapter

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9280622

FEM Module BMW F20 F21 F22 F30 F32 ECU Control Unit Fuse Box 9280622

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6982401

BMW 1 3 Series E81 E87 E90 E91 E92 E93 Parking Control Module Unit PDC

£85.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2129002813

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129002813

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4F1862335

Audi Q7 4L Bluetooth Interface Telephone Control Module ECU Unit 4F1862335

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1638201126

Mercedes ML W163 Windscreen Rain Light Sensor Control Module A1638201126

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8570659

Wiring BMW X3 F25 N47N Engine Automatic Gearbox Module Wiring Harness 8570659

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8371312

BMW 3 Series E46 Relay Control Unit Module Bracket Holder 61358371312 8371312

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8507918

BMW F20 F21 N47S1 Engine Wiring Harness Injector Module Loom Cable 8507918

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1729007600

Seat Module Mercedes W204 Front Right O/S Memory Control Unit A1729007600

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2044401001

Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2044401001

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6953424-2

BMW Z4 Series 2 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7342174

BMW X1 E84 Z4 E89 LED Xenon Headlight ECU Module 7342174 L90028076

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6989713-1

BMW E88 E89 E93 Convertible Cabrio DWA-Alarm System Module Set Of 2 6989713

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9367807

BMW X5 F15 Battery B+ Engine Compartment Positive Terminal Point 9367807

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2115450301-1

Mercedes S211 W211 W219 Fuse Distribution Box Unit A2115453901

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-7546206

Wiring BMW E60 E61 E63 E64 Petrol N52 Automatic Transmission Harness 7546206

£61.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9218380

Steering Wheel Module BMW F10 F11 F20 F21 F30 F31 Heating Control Unit 9218380

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9306220

Telematics Module BMW F10 F20 F30 F31 Bluetooth Teleservices GPS 9306220

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0009051600

Mercedes W207 W212 W221 Front Windscreen Windshield Camera A0009051600

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1779007305

Audio Amplifier Mercedes C118 W177 W247 Radio Sound Burmester Unit A1779007305

£332.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 9157156

Body Gateway Module BMW E60 E61 LCI E63 E64 ECU Control Unit 9157156

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6395400150

Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400150

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1679008311

Mercedes C238 Door Control Unit Module ECU Front Left N/S A1679008311

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7H0843637E

Volkswagen T5 Rear Sliding Door Locking Lock Plate Catch Left N/S A6397601904

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 1388911-2

BMW E36 E38 E85 Mini R52 R57 4x Change-Over Contact Relay Violet Set 1388911

£13.95

Free delivery: Aug 27

If paid before 14:00

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